Loom



J. C. BROOKS.

LOOM.

APPLICATION FILED OCT 2, I918- Patented Jan. 31, 1922..

5 SHEETSSHEET 1.

J. C. BROOKS.

LOOM.

APPLICATION FIIZED OCT. 2, 191B- 1,405,096, Patented Jan. 31, 1922.

5 SHEETS-SHEET 2.

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John C. BrooKs byfawwkw Afiys.

J. C. BROOKS.

LOOM.

APPLICATION FILED OCT 2. 1918.

5 SHEETS-SHEET 3.

\nvenior John C. B'rooKs Patented Jan. 31, 1922.

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III] |||||J J. C. BROOKS.

LOOM.

APPLICATION FILED OCT 2. 1918.

1,405,096. P ented Jan. 31, 1922.

5 SHEETS-SHEET 4.

. \nvenior. John C. BTooKs by Ai'iys.

J. C. BROOKS:

LOOM.

APPLICATION FILED OCT- 2,1918- Pate med Jan. 31,1922.

5 SHEETSSHEET 5.

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JOHN .G. BROOKS, OF PETERSON, NEW JERSEY.

. DOOM.

v specification of Letters Patent. Patented J an. 31, 1922.

Application filed October 2, 1918. Serial No. 256,589.

To all whom it may concern:

Be it known that I, JOHN C. BROOKS, a citizen of the United States, residin at Paterson, county of Passaic, State of e w Jersey, have invented an Improvement 111 Looms, of which the followingdescription,

in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to looms and particularly to looms of that type which are constructed to carry each pick of weft thread through the shed by means of an air blast instead of by means of the ordlnary shuttle, and the object of the invention is to provide a novel means for measuring each pick of thread and for blowing it across the shed; to provide a loom of thls type which 1s constructed so that wefts (if different colors can be used; and otherwise to improve looms of this nature, all as will be more fully set forth.

In order to give an understanding of my invention, I have illustrated in the drawings an embodiment thereof which I will now describe, after which the novel .features will be pointed out in the appended claims.

Figure 1 is a front view of a loom em bodying my invention;

Fig. 2 is a side view of parts of the loom;

Fig. 3 is an enlarged front view of the end of the lay carrying the weft measuring device;

Fig. 4 is a section on the line 44=, Flg. 3;

Fig. 5 is a fragmentary side view showing the means for operating the w'eft measuring device;

Fig. 6 is a top plan view of Fig. 3;

Fig. 7 is a fragmentary view showing in side elevation the weft cutting device;

Fig. 8 is a top plan view of Fig. 7

Fig. 9 is a front view of Fig. 7.

1 indicates a loom frame, 2 the lay which is carried by the usual lay swords 3 that rise from and are supported on the rock shaft 4, and 5 indicates the harness frames. These parts may have any suitable or usual construction.

The improved loom herein shown comprises a weft measuring device carried by the lay and by which pre etermined lengths of weft thread may be measured off from a bobbin or other source' of supply, a weftdelivery nozzle or nozzles to which the weft arranged so that an threads are delivered from the weft-measur-' mg device, and means for creating an air blast through said nozzle or nozzles to blow said lengths across the open sheds. In the illustrated embodiment of my invention a construction is provided capable of handling a plurallty of separate wefts which may be of different colors, said construction being one of the individual into use according to wefts may be broug t desired to produce in the pattern which it is the woven fabric.

One end of the lay 2 is provided with two vertically-extending guides 6 in which is mounted for vertical movement a frame 7 carrylng the weft measuring devices and weft de lvery nozzles through which the weft ends are delivered to the shed. The we ft delivery nozzles are shown at 8 there being one nozzle for each separate source of weft thread supply. In the construction \illustrated have shown two weft nozzles thus permlttmg the use of two different weft threads. These nozzle tubes 8 extend across the frame 7 and the wdft threads 9 and 10 are led into the outer ends of said tubes, are carried through the tubes and are delivered from the inner ends thereof. Each nozzle tube 8 has a pipe connected thereto between its ends and preferably near the delivery end thereof and through which air may be forced, the blast olf air thus created serving to blow the weft from the delivery end of the nozzle tube across the shed. The two air pipes are indicated at 11 and 12 respectively and they communicate with the npzzle tubes adjacent the delivery ends there- 0 Suitable means are provided for moving the frame 7 carrying the weft nozzles 8 in a vertical direction so as to bring either nozzle into position to throw the weft therein across the open shed when the lay moves backwardly depending upon which weft it is desired to use at any pick, and means are also provided for cont-rolling the delivery of air through the flexible pipes 11 and 12 so that the air blast will always be delivered' through the pipe leading to the particular nozzle which is in line with the shed. The means for shifting the frame 7 vertically comprises an arm 13 depending from said frame and guided in its lower end in a bracket 14 secured to and carried by the rock shaft 4. This arm 13 has a link 330 pivoted thereto at 331', and said link is pivoted at 16 to one end of alever 15, the other end of said lever being pivoted to the loom frame 1 at 17 (see Fig. 2). Said lever has a rod 19 connected thereto at 18 which rod is pivotally connected at its upper end to a pattern controlled lever 20 that is pivoted to the loom frame at '21. 22 indicates a shaft journaled on the loom frame which is provided with suitable pattern mechanism 23 in the form. of a pattern cam or a pattern chain which acts on the lever 20 and raises and lowers it. Such pattern controlled rising andfalling movement of the lever 20 will be communicated through the member 19 and lever 15 to the Stem 13 thereby producing a corresponding shifting movement of the frame 7. The shaft 22 may be operated in any suitable way. I have herein shown it as actuated by a pawl and ratchet mechanism controlled from the usual crank shaft 24 by which the lay is operated. Pivotally mounted on the shaft 22 is a pawl carrying arm 25 which sustains a pawl 26 that co-operates with a ratchet 27 fast on the shaft 22. This pawl-carrying arm 25 is connected by a link 28 to a cam lever 29 pivoted to the loom frame at 30 and acted upon by a cam 31 on the crank shaft 24. Each rotation of the crank shaft 24 will thus move the shaft 22 forward one step and the pattern mechanism 23 on said shaft will determine which of the weft nozzles is brought into operative position. The means for producing the necessary air blast for blowing the weft across the shed comprises a pump cylinder 32 secured to the lay sword 3 and having therein a piston, the piston rod 33 of which is connected to a lever 34 pivoted to the loom frame at 340. The upper end of the lever has a pin 35 therein which is received between two shoulders 36 formed on an actuating bar 37 that is ivoted to a bracket 38 secured to the lay. ence at each backward movement of the lay the lever 34 will be turned to give the plunger or piston of the pump a forward movement thereby to deliver an air blast therefrom and at each forward movement of the lay the pump piston will be withdrawn. The pump has a flexible pipe 39 connected thereto which leads to a valve mechanism indicated generally at 40 that determines whether the air blast shall be delivered to the pipe 11 or the pipe 12. This valve mechanism is operated automatically by the movement of the frame 7 so that the air blast will always be delivered to the nozzle 8 which is situated in operative position. While any suitable valve may be used I have herein shown a valve comprismg a valve casing 41 to which the pipes 39, 11 and 12 are connected and which is supported on a bracket 43 rigidly secured to the depending arm 13 of the frame 7, and a valve plug 44 in the valve casing provided with a port 42 that is adapted to be brought into communication with either of the pipes 11 or 12. The valve plug 44 has an arm 45 rigid theretwith which is ivotally connected to a bracket 46 dependlng from the lay. As the frame 7 rises and falls the valve will move with it and because the arm of the valve plug is connected to the bracket 46 the vertical movement of the valve will turn the valve plug to bring the port 42 into communication with either pipe 11 or 12 depending upon the position of the frame.

Associated with each nozzle tube 8 is a weft measuring device constructed to draw off and measure a length of weft sufiicient to reach across the shed. Each weft measuring device comprises a. measuring wheel 47 journaled in the frame 7 and a presser wheel 48 which rests on the weft measuring wheel and means to rotate positivelyv the weft measuring wheel. Each nozzle 8 is provided with an opening in which the wheels 47 and 48 operate so that the weft thread which passes through each nozzle will pass between the two wheels. The presser wheel 48 is carried by a lever 49 that is pivoted to the frame 7 at 50. The means herein illustrated for positively rotating the Weft measuring wheel 47 comprises a pinion 51 rigid with said weft measuring wheel and which meshes with a gear 52 that has a pinion 53 integral therewith which pinion in turn meshes with a segmental gear 54. The segmental gear 54 is carried by an elbow lever 55 pivoted to the frame 7 at 56. The arm 57 of said elbow lever is offset and the offset end thereof is adapted to enter between two lugs or projections 178 extending rearwardly from the upper end of an elbow lever 58 pivoted at 59 to the lay. The elbow lever 58 is connected by a link 60 to an arm 61. fast on a rock shaft 62 journaled on the lay sword 3. Said rock shaft has another arm 63 fast thereon which is connected by a link 64 to one end of a lever 65 pivoted to the lay sword 3. The other end of said lever 65 is connected by a link 66 to a cam actua-ted'lever 67 and pivotedto the loom frame 68. The lever 67 has a roll or pin 69 which operates in a cam groove 70 formed in a cam 71 fast to the cam shaft 72. The downward movement of the lever 67 will operate through the connections above described to rock the elbow lever 58 about its pivot 59 and thereby turn the segmental gear 54, the turning movement of said gear operating to positively rotate the measuring wheel 47. The linkage connection between the cam lever 67 and the lever 65 permits the vibrating movement of the lay without affecting the operative connection between said lever 67 and the lever 65. The cam groove 70 is arranged so that the forward rotative feeding movement of the measuring wheel 47 will occur as the lay approaches the backward limit of its movement and while the pump 32 is being operated to deliver the air blast through one of the nozzles 8. At each pick of the loom therefore a length of weft will be measured off and at the same time the said length will be blown across the open shed.

There is a weft measuring device for each of the weft nozzles 8 and the construction is such that each weft measuring device wlll be brought into operative relation to the elbow lever 58 when the corresponding weft nozzle is in operative position.

It will be remembered that the offset portion 57 of the elbow-lever is received between two lugs or projections 178. These lugs or projections form between them an open-ended vertical space or groove through which the offset portion 57 of the elbowlever 55 may move as the frame 7 is shifted vertically. Fig. 1 shows the frame 7 in its elevated position and the offset portion 57 of the lower lever 55 occupies the space. between the lugs 178 in the lever 58. When the frame 7 moves downwardly to bring the upper nozzle into position to deliver a weft across the shed, the offset portion 57 of the lower elbow-lever 55 will move downwardly out of the space between the lugs 178, and the offset portion 57 of the upper lever 55 will be carried into such space. The downward movement of the frame 7, therefore, disturbs the operative connection between the lever 58 and the lower lever 55 and establishes an operative connection between said lever 58 and the u per lever 55.

The means for operating the weft measuring wheel is constructed to give it a rotation first in one direction to draw off and measure a length of weft and then to rotate it in the reverse direction. In order that the weft may not be drawn back during the reverse rotative movement of the weft measuring wheel, I have provided for raising the presser roll fromv the weft measuring wheel during such backward rotative move ment.

Each lever 49 is provided at its forward end with a slot 73 in which operates a pin 74 carried by a lever 75 pivoted at 76 to the frame 7, the lower end 77 of said lever being offset and adapted to be received between two projections similar to the projections 178 on the lever 58 and which extend from the upper end of the vertical arm of an elbow lever 78 pivoted to the lay at 79, said lever beingsimilar to the lever 58. This lever 78 is connected by a link 80 to an arm 81 on a rock shaft 82 said rock shaft having another arm 83 thereon which is connected by a link 84 to one end of a lever 85 that is pivoted to the lay sword 3, the other end of said lever being connected by a link 86 to the end of a cam lever 87 similar to the lever 67 and pivoted to the loom frame at 88. This lever 87 has a roll 89 extending therefrom which operates in a cam. groove 90 formed in the cam 900. The cam groove90 is so shaped and timed as to turn the lever 75 in a direction to raise the arm. 49 thereby carrying the presser roll out of contact with the weft measuring wheel during the time that the said wheel is being rotated backwardly. Each lever 49 is provided with a gripping projection 91 adapted to enter a notch 92 in the nozzle 8 and grip or pinch the weft thread when the lever 49 is raised so' that during the backward movement of each weft measuring roll the Weft thread will be held by the projection 91.

The construction of the levers 75 with their offset ends 77 is such that as the frame 7 is raised or lowered to bring the different weft nozzles into operative position the corresponding levers will be brought into operative engagement with the elbow .lever 78 in a manner similar to that in which the offset portions 57 of the levers 55 are brought into and out of operative engagement with the lever 58.

After each pick of weft has been blown through the open shed as above described and during the followin forward movement of the lay said pick wilFbe severed adjacent the delivery end of the nozzle 8. The thread severin means comprises a blade 93 secured to the reast beam 94 and having a second blade 95 pivoted thereto at 96, said second blade having a depending arm 97 that is adapted to be engaged by a bunter 98 carrled by the lay 1 (see Figs. 7, 8 and 9). Pivoted on the movable blade 95 is a weftbending arm 99 having a depending arm 100 that is also adapted to be engaged by the bunter 98. As the lay beats forward the bunter will engage the arms 100 and 97, thus swinging the weft-bending member 99 and the blade 95 downwardly onto the weft adjacent the end of the nozzle, the member 99 acting to bend the weft somewhat and the blade 95 operating to cut the weft adjacent the edge of the cloth. The end of the bunter 98 is shown as having two operative faces 101', 102 situated to act on the arms 100 and 97 respectively, this construction being employed so that the weft-bending arm will first be moved downwardly onto the weft, after which the cutting blade 95 will be moved. The weft-bending arm puts a kink into the weft which is highly advantageous as the kink offers a resistance to the air blast,thus facilitating the carrying of the weft through the shed and ensuring that the weft will be drawn tight.

While I have shown herein a construction in which the silk thread or yarn which is made directly from the cocoons is delivered to a loom in which it is woven into a fabric, yet it will be obvious that so far ;as the operation of the device for formin the silk thread or yarn is concerned, sai

device might deliver the yarn to other teas tile machines, such, for instance, as knittin machines, lace-making machines, embroldering machines, sewing machines, etc.

I claim:

1. In a loom, the combination with shedforming mechanism, of a plurality of weft nozzles adapted to deliver weft to the shed, means to brin any one of the nozzles into position to de iver its weft to the shed, means for blowing the weft from the positioned nozzle across the shed, and weftmeasuring rolls one for each nozzle to measure the weft as it is delivered to the shed.

2. A loom such as described in claim 1 having a common actuator for all of the rollers and means by which the actuator is placed in operative relation to any nozzle when the latter is brought into operative position.

3. In a loom, the combination with shedforming mechanism, of a plurality of weft nozzles adapted to deliver weft to the shed,

means to bring any one of the nozzles into operative by the shifting of the nozzles to control the weft-blowing means.

forming mechanism, of a V 4. In a loom, the combination with shedundisturbed.

5. In a loom, the combination with shedplurality of weft nozzles each adapted to dellveraweft thread tothe shed, means for selectively actuating said nozzles to bring anyone into operative position to deliver its weft to the shed, means to develop an air blast, and means operating automatically to direct the air blast into the nozzle which is in operative position.

6. In a loom, the combination with shedforming mechanism, of a plurality of weft nozzles, each adapted to deliver a weft thread to the shed, means to bring anyone of the weft nozzles into operative position to deliver its weft "to the shed, means to generate an air blast and a valve device to direct the air blast to the ositioned nozzle. In testimony whereof, have signed my name to this specification. P JOHN C. BROOKS. 

